share/media/spiegel.lua

   1 -- libquvi-scripts
   2 -- Copyright (C) 2010-2011,2013  Toni Gundogdu <legatvs@gmail.com>
   3 --
   4 -- This file is part of libquvi-scripts <http://quvi.sourceforge.net/>.
   5 --
   6 -- This program is free software: you can redistribute it and/or
   7 -- modify it under the terms of the GNU Affero General Public
   8 -- License as published by the Free Software Foundation, either
   9 -- version 3 of the License, or (at your option) any later version.
  10 --
  11 -- This program is distributed in the hope that it will be useful,
  12 -- but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 -- GNU Affero General Public License for more details.
  15 --
  16 -- You should have received a copy of the GNU Affero General
  17 -- Public License along with this program.  If not, see
  18 -- <http://www.gnu.org/licenses/>.
  19 --
  20
  21 --
  22 -- NOTE: Some streams (e.g. 3gp) do not appear to be available (404) even
  23 --       if they are listed in the config XML.
  24 --
  25
  26 local Spiegel = {} -- Utility functions unique to this script
  27
  28 -- Identify the script.
  29 function ident(self)
  30     package.path = self.script_dir .. '/?.lua'
  31     local C      = require 'quvi/const'
  32     local r      = {}
  33     r.domain     = "spiegel%.de"
  34     r.formats    = "default|best"
  35     r.categories = C.proto_http
  36     local U      = require 'quvi/util'
  37     r.handles    = U.handles(self.page_url, {r.domain}, {"/video/"})
  38     return r
  39 end
  40
  41 -- Query available formats.
  42 function query_formats(self)
  43     Spiegel.get_media_id(self)
  44
  45     local config  = Spiegel.get_config(self)
  46     local formats = Spiegel.iter_formats(config)
  47
  48     local t = {}
  49     for _,v in pairs(formats) do
  50         table.insert(t, Spiegel.to_s(v))
  51     end
  52
  53     table.sort(t)
  54     self.formats = table.concat(t, "¦")
  55
  56     return self
  57 end
  58
  59 -- Parse media URL.
  60 function parse(self)
  61     self.host_id = "spiegel"
  62
  63     local p = quvi.fetch(self.page_url)
  64
  65     self.title = p:match('"spVideoTitle">(.-)<')
  66                     or error('no match: media title')
  67
  68     self.thumbnail_url = p:match('"og:image" content="(.-)"') or ''
  69
  70     Spiegel.get_media_id(self)
  71
  72     local config  = Spiegel.get_config(self)
  73     local formats = Spiegel.iter_formats(config)
  74
  75     local U       = require 'quvi/util'
  76     local format  = U.choose_format(self, formats,
  77                                     Spiegel.choose_best,
  78                                     Spiegel.choose_default,
  79                                     Spiegel.to_s)
  80                         or error("unable to choose format")
  81     self.duration = (format.duration or 0) * 1000 -- to msec
  82     self.url      = {format.url or error("no match: media url")}
  83
  84     return self
  85 end
  86
  87 --
  88 -- Utility functions
  89 --
  90
  91 function Spiegel.get_media_id(self)
  92     self.id = self.page_url:match("/video/.-video%-(.-)%.")
  93                 or error ("no match: media id")
  94 end
  95
  96 function Spiegel.get_config(self)
  97     local fmt_s      = "http://video.spiegel.de/flash/%s.xml"
  98     local config_url = string.format(fmt_s, self.id)
  99     return quvi.fetch(config_url, {fetch_type = 'config'})
 100 end
 101
 102 function Spiegel.iter_formats(config)
 103     local p = '<filename>(.-)<'
 104            .. '.-<codec>(.-)<'
 105            .. '.-<totalbitrate>(%d+)'
 106            .. '.-<width>(%d+)'
 107            .. '.-<height>(%d+)'
 108            .. '.-<duration>(%d+)'
 109     local t = {}
 110     for fn,c,b,w,h,d in config:gmatch(p) do
 111         local cn = fn:match('%.(%w+)$') or error('no match: container')
 112         local u = 'http://video.spiegel.de/flash/' .. fn
 113 --        print(u,c,b,w,h,cn,d)
 114         table.insert(t, {codec=string.lower(c), url=u,
 115                          width=tonumber(w),     height=tonumber(h),
 116                          bitrate=tonumber(b),   duration=tonumber(d),
 117                          container=cn})
 118     end
 119     return t
 120 end
 121
 122 function Spiegel.choose_best(formats) -- Highest quality available
 123     local r = {width=0, height=0, bitrate=0, url=nil}
 124     local U = require 'quvi/util'
 125     for _,v in pairs(formats) do
 126         if U.is_higher_quality(v,r) then
 127             r = v
 128         end
 129     end
 130     return r
 131 end
 132
 133 function Spiegel.choose_default(formats)
 134     return formats[1]
 135 end
 136
 137 function Spiegel.to_s(t)
 138     return string.format('%s_%s_%sk_%sp',
 139         t.container, t.codec, t.bitrate, t.height)
 140 end
 141
 142 -- vim: set ts=4 sw=4 tw=72 expandtab: